TLE7729TXUMA1 Datasheet TLE7729TXUMA1 | P1-P2

T H E T L E 7 7 2 9 – SatRIC

- is a highly integrated interface IC specially

designed for automotive restraint applications. The device, located in the ECU

(Electronic Control Unit) of the airbag system, is able to receive data from different

types of intelligent sensors like inertia and pressure sensor satellites for front-,

side-, or rear-crash sensor applications. It provides a pre-regulated power supply

voltage to the satellites over a twisted pair of wires. The satellite module transmits

digital data to TLE 7729 by modulating the line current.

Applications

Automotive Restraint Applications

Features

4 independent satellite receiver channels for current modulated data

Each channel can support up to two satellites with

a total of up to eight sensors

Data rate 125 kBaud

Support of 11-, 13-, 18-Bit Manchester 1 or 2 encoded messages

Channel conﬁguration in pairs (Bus Mode, Protocol Type)

Supply of satellite channels via 4 independent voltage regulators

Adjustable current level detection thresholds

Asynchronous and synchronous data transmission modes

All digital I/Os are 3.3 V and 5 V compatible

4 Digital outputs for voltage-converted received satellite signals

16-bit 8 MHz Serial Peripheral Interface (SPI)

Embedded protocol handler for data preprocessing

Small P-TSSOP-28 Package

Embedded Protection Functions

Current limitation in case of satellite output shorted to GND or Battery

Channel speciﬁc over-temperature shutdown

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w w w . i n f i n e o n . co m / r e s t r a i n t - s y s t e m - I C

Automotive Power

Product Brief

TLE 7729

4 Channel Airbag Satellite Receiver IC

SatRIC

Power Supply

Control

Protocol

Handler

Control

Logic

SATFD1 - Driver

SATFD 2 - Driver

REF

SATFD1

SATREF12

SYNC12

Data

Control

SYNCxy

BUSCxy

Sense

Control

Logic

6 V/11 V

SYNC34

BUS12

BUS34

SATREF3420

SATFD2

SATFD 3 - Driver

SATFD3

SATFD 4 - Driver

Protocol Handler

SATFD4

AGND

Start

Bits

CRC

Sensor

Status

Sensor Data

DGND

N.C.

HW StatusCommunication Status

TLE 7729

N.C.

TEST

RIN

CLK

SATSYNC

RxD3

RxD2

RxD1

SPI

Interface

MOSI

SCK

MISO

Channel

Address

System

Status

Receiver Data

Embedded Diagnostic Functions

Leakage detection to GND and Battery

Ground loss detection

Short to GND and open detection at every

reference pins

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Product Brief

How to reach us:

http://www.inﬁneon.com

Published by

Inﬁneon Technologies AG

81726 Munich, Germany

Legal Disclaimer

The information given in this Product Brief shall in no event be

regarded as a guarantee of conditions or characteristics

(“Beschaffenheitsgarantie”). With respect to any examples or hints

given herein, any typical values stated herein and/or any informa-

tion regarding the application of the device, Inﬁneon Technologies

hereby disclaims any and all warranties and liabilities of any kind,

including without limitation warranties of non-infringement of

intellectual property rights of any third party.

Information

For further information on technology, delivery terms and

conditions and prices please contact your nearest

Inﬁneon Technologies Ofﬁce (www.inﬁneon.com).

Warnings

Due to technical requirements components may contain

dangerous substances. For information on the types in question

please contact your nearest Inﬁneon Technologies Ofﬁce.

Inﬁneon Technologies Components may only be used in life-

support devices or systems with the express written approval

of Inﬁneon Technologies, if a failure of such components can

reasonably be expected to cause the failure of that life-support

device or system, or to affect the safety or effectiveness of that

device or system.

Life support devices or systems are intended to be implanted in

the human body, or to support and/or maintain and sustain

and/or protect human life. If they fail, it is reasonable to assume

that the health of the user or other persons may be endangered.

Published by Inﬁneon Technologies AG

Application Examples (Side Impact)

SatRIC

(TLE7729)

p p

SYNC

SPI

Line 4

Line 3

Line 2

Line 1

Right Doors

Airbag

ECU

B-pillar

: up-front sensors (acceleration)

: pressure sensors in doors

: acceleration sensor in B-pillar

Left Doors

Airbag ECU

MCU

Product Summary

Type Sales Code Description Package

TLE 7729 Available upon request 4 Channel Satellite Receiver P-TSSOP-28

System Overview

TLE 7729

SatRIC

TLE7718

TLE7738

8 Loop

CrosSave

TLE7714

TLE7734

4 Loop

CrosSave

TLE 7729

SatRIC

I/O

Buck

TLE 6250

CAN

TLE 7259

LIN

Safing

Engine

(XC866)

Side ImpactFront Impact

Battery

Right Door

High Speed CAN

Safing Signals

TLE 6711

Passenger Sensing

Side Airbag

DoorsCurtains

BuckBuck

BOOST

BAT

SAT

& V

SYNC

LOGIC

Front Airbag

Buckle

Switch

Buckle

Switch

Passenger

DualStage

Occupant

DualStage

Warning Lamp

Airbag Off

Smart Power

Switch

Pedestrian Protection

Bonnet

Left Door

Sensor SPI

Firing SPI

XC164

MCU

Airbag ECU

Ordering No. B112-H8941-X-X-7600

Printed in Germany

PS 1106.5 nb

P1-P2

TLE7729TXUMA1

Mfr. #:

Buy TLE7729TXUMA1

Manufacturer:

Infineon Technologies

Description:

Power Management Specialized - PMIC AIRBAG_RESTRAINT_IC

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

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TLE7729TXUMA1